Closure is nothing but a technique bringing out the variable to the outer scope so that parent scope can also work with the variable from child scope.
function foo(){ let count = 0; return function(){ return count+=1; }} let doo = foo(); console.log(doo()); console.log(doo()); console.log(doo()); console.log(count); Here count variable can be mutated from the outer scope.
But count variable cannot be accessed directly from outside the foo function.
Top comments (2)
Interesting.
I think it would be more accurate to say that closures "close over" or encapsulate the scope of a variable. They don't bring the value into the outer scope, but instead provide a mechanism to access the encapsulated value. Also, it would help to provide the result of the console logs to get an idea of what it's actually doing.